Safety hook



FIG. 1 is a perspective view of a safety hook showing my new design;

FIG. 2 is an elevational view thereof showing the side opposite that visible in FIG. 1;

FIG. 3 is a side elevational view thereof from the left of FIG. 2;

FIG. 4 is a side elevational view thereof from the right of FIG. 2;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a safety hook, as shown and described. 